This is a fun vocalise that is a variation on one I found in Berton Coffin’s Sounds of Singing. The difficulty lies in the quick movement of major seconds. Maintain the accuracy of your pitch while moving quickly.
[I figured out a way to post the file so that there is no distortion in notes relative to the staff, and I removed the .pdf link as you can now print this from the image URL itself]
It IS fun. I can testify.